From f757bb245a86fec34480b5ac7f43fe83b96abfab Mon Sep 17 00:00:00 2001 From: Wang Jie Date: Mon, 23 Oct 2017 08:54:35 +0800 Subject: [PATCH] Update scheduling-hugepages.md --- docs/tasks/manage-hugepages/scheduling-hugepages.md | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/docs/tasks/manage-hugepages/scheduling-hugepages.md b/docs/tasks/manage-hugepages/scheduling-hugepages.md index 7db2bd1576..612dfcce50 100644 --- a/docs/tasks/manage-hugepages/scheduling-hugepages.md +++ b/docs/tasks/manage-hugepages/scheduling-hugepages.md @@ -8,7 +8,7 @@ title: Manage HugePages {% include feature-state-alpha.md %} Kubernetes supports the allocation and consumption of pre-allocated huge pages -by applications in a Pod as an **alpha** feature. This page describes how users +by applications in a Pod as an **alpha** feature. This page describes how users can consume huge pages and the current limitations. {% endcapture %} @@ -16,7 +16,7 @@ can consume huge pages and the current limitations. {% capture prerequisites %} 1. Kubernetes nodes must pre-allocate huge pages in order for the node to report - its huge page capacity. A node may only pre-allocate huge pages for a single + its huge page capacity. A node may only pre-allocate huge pages for a single size. 1. A special **alpha** feature gate `HugePages` has to be set to true across the system: `--feature-gates="HugePages=true"`. @@ -32,9 +32,9 @@ schedulable resource. Huge pages can be consumed via container level resource requirements using the resource name `hugepages-`, where size is the most compact binary notation -using integer values supported on a particular node. For example, if a node +using integer values supported on a particular node. For example, if a node supports 2048KiB page sizes, it will expose a schedulable resource -`hugepages-2Mi`. Unlike CPU or memory, huge pages do not support overcommit. +`hugepages-2Mi`. Unlike CPU or memory, huge pages do not support overcommit. ```yaml apiVersion: v1 @@ -60,14 +60,14 @@ spec: medium: HugePages ``` -- Huge page requests must equal the limits. This is the default if limits are +- Huge page requests must equal the limits. This is the default if limits are specified, but requests are not. - Huge pages are isolated at a pod scope, container isolation is planned in a future iteration. - EmptyDir volumes backed by huge pages may not consume more huge page memory than the pod request. - Applications that consume huge pages via `shmget()` with `SHM_HUGETLB` must - run with a supplemental group that matches `proc/sys/vm/hugetlb_shm_group` + run with a supplemental group that matches `proc/sys/vm/hugetlb_shm_group`. ## Future